This codebook for a machine-readable data file contains frequencies for the values of 310 variables for 446 student cases that comprised the field test data from the testing of Knowing, a Level III module of the BSCS Human Sciences Program. This module was developed and field tested with eighth-grade students in middle schools and junior high schools in the spring of 1979. The module was tested with a different student group and in different schools than participated in the three-year field test of most of the Human Sciences Program. (Author)